adamc@1: (* Copyright (c) 2008, Adam Chlipala
adamc@1:  * All rights reserved.
adamc@1:  *
adamc@1:  * Redistribution and use in source and binary forms, with or without
adamc@1:  * modification, are permitted provided that the following conditions are met:
adamc@1:  *
adamc@1:  * - Redistributions of source code must retain the above copyright notice,
adamc@1:  *   this list of conditions and the following disclaimer.
adamc@1:  * - Redistributions in binary form must reproduce the above copyright notice,
adamc@1:  *   this list of conditions and the following disclaimer in the documentation
adamc@1:  *   and/or other materials provided with the distribution.
adamc@1:  * - The names of contributors may not be used to endorse or promote products
adamc@1:  *   derived from this software without specific prior written permission.
adamc@1:  *
adamc@1:  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
adamc@1:  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
adamc@1:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
adamc@1:  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
adamc@1:  * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 
adamc@1:  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
adamc@1:  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
adamc@1:  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
adamc@1:  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
adamc@1:  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
adamc@1:  * POSSIBILITY OF SUCH DAMAGE.
adamc@1:  *)
adamc@1: 
adamc@1: (* Laconic/Web language parser *)
adamc@1: 
adamc@1: structure Compiler :> COMPILER = struct 
adamc@1: 
adamc@1: structure LacwebLrVals = LacwebLrValsFn(structure Token = LrParser.Token)
adamc@1: structure Lex = LacwebLexFn(structure Tokens = LacwebLrVals.Tokens)
adamc@1: structure LacwebP = Join(structure ParserData = LacwebLrVals.ParserData
adamc@1:                          structure Lex = Lex
adamc@1:                          structure LrParser = LrParser)
adamc@1: 
adamc@1: (* The main parsing routine *)
adamc@1: fun parse filename =
adamc@1:     let
adamc@1:         val () = (ErrorMsg.resetErrors ();
adamc@1:                   ErrorMsg.resetPositioning filename)
adamc@1: 	val file = TextIO.openIn filename
adamc@1: 	fun get _ = TextIO.input file
adamc@1: 	fun parseerror (s, p1, p2) = ErrorMsg.errorAt' (p1, p2) s
adamc@1: 	val lexer = LrParser.Stream.streamify (Lex.makeLexer get)
adamc@1: 	val (absyn, _) = LacwebP.parse (30, lexer, parseerror, ())
adamc@1:     in
adamc@1:         TextIO.closeIn file;
adamc@1:         SOME absyn
adamc@1:     end
adamc@1:     handle LrParser.ParseError => NONE
adamc@1: 
adamc@1: fun testParse filename =
adamc@1:     case parse filename of
adamc@1:         NONE => print "Parse error\n"
adamc@1:       | SOME file =>
adamc@1:         if ErrorMsg.anyErrors () then
adamc@1:             print "Recoverable parse error\n"
adamc@1:         else
adamc@1:             (Print.print (LaconicPrint.p_file file);
adamc@1:              print "\n")
adamc@1: 
adamc@1: end